Industrial Electrical Symbols with Technical Metadata

33,502 PNG images depict standardized electrical symbols from EPLAN IEC, NFPA, and GB systems. The collection includes complete technical metadata and AI-generated visual descriptions for each symbol. Curated by Covaga, this dataset was last updated in April 2026.

Use Cases

• Train image classifiers to automatically categorize symbols by type using the PNG images and AI-generated descriptions.
• Develop industrial OCR pipelines to extract and interpret electrical symbols from scanned schematic diagrams.
• Build vision-language models for retrieval-augmented generation (RAG) using the paired symbol images and technical metadata.
• Benchmark symbol recognition algorithms on a dataset of 33.5K images spanning multiple international standards (IEC, NFPA, GB).

Strengths

• 33,502 individual symbol images provide a substantial volume for model training.
• Each symbol includes complete technical metadata and an AI-generated visual description.
• Covers symbols from three major international standards: EPLAN IEC, NFPA, and GB.

Limitations

• Dataset size and specific file formats are not provided, complicating download planning.
• The 33€ expense may be a barrier for some users, though its purpose is unclear.
• Potential for class imbalance or gaps in symbol coverage across the different standards is unknown.

Provenance

Source

Curated by Covaga from standardized electrical symbol libraries.

Collection Method

Collection of PNG images from EPLAN IEC, NFPA, and GB standards, augmented with AI-generated descriptions.

Freshness

Last updated in April 2026.